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American Journal of Reproductive Immunology: AJRI

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https://www.readbyqxmd.com/read/28337828/tradd-traf2-rip1-and-tak1-are-required-for-tnf-%C3%AE-induced-pro-labour-mediators-in-human-primary-myometrial-cells
#1
Ratana Lim, Gillian Barker, Martha Lappas
PROBLEM: TNF-α plays a central role in the processes of human labour and delivery. This study sought to determine the role of the adaptor proteins TNFR1-associated death domain protein (TRADD), TNF receptor-associated factor 2 (TRAF2), receptor interacting protein 1 (RIP1) and transforming growth factor beta-activated kinase 1 (TAK1) in TNF-α-induced formation of pro-labour mediators. METHOD OF STUDY: Human primary myometrial cells were transfected with siRNA against TRADD (siTRADD), TRAF2 (siTRAF2), RIP1 (siRIP1) or TAK1 (siTAK1), treated with TNF-α, and assayed for pro-inflammatory mediators expression...
March 24, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28337825/expression-of-twist-in-the-first-trimester-trophoblast-and-decidual-tissue-of-women-with-recurrent-pregnancy-losses
#2
Jin Hee Ahn, Hye Ran Park, Chan-Woo Park, Dong-Wook Park, Joanne Kwak-Kim
PROBLEM: In this study, we aim to investigate if the expression of TWIST in the first-trimester placenta and decidua has any association with spontaneous abortion (SAB) and recurrent pregnancy losses (RPL). METHODS: Expression of TWIST was measured in the first-trimester trophoblast and decidual tissues using RT-PCR and immunohistochemistry. Women with a pregnancy loss comprised the study group (AB group) including women with two or more recurrent pregnancy loses (RPL group), and women with a spontaneous abortion who had no history of previous pregnancy losses (SAB group)...
March 24, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28337819/pai-1-in-granulosa-cells-is-suppressed-directly-by-statin-and-indirectly-by-suppressing-tgf-%C3%AE-and-tnf-%C3%AE-in-mononuclear-cells-by-insulin-sensitizing-drugs
#3
Kaori Yamada-Nomoto, Osamu Yoshino, Ikumi Akiyama, Akira Iwase, Yosuke Ono, Tomoko Nakamura, Miyuki Harada, Akitoshi Nakashima, Tomoko Shima, Akemi Ushijima, Yutaka Osuga, Russell Jeffrey Chang, Shunichi Shimasaki, Shigeru Saito
PROBLEM: Plasminogen activator inhibitor-1 (PAI-1) is elevated in women with polycystic ovary syndrome (PCOS), but the regulation in granulosa cells (GCs) is unclear. METHOD OF STUDY: PAI-1 expression in PCOS ovaries was investigated immunohistologically. PAI-1 expressions in HGrC1, a human GC cell line, were investigated at mRNA and activity levels. The expressions of TGF-β and TNF-α in peritoneal fluid mononuclear cells (PFMCs) were measured with quantitative PCR...
March 24, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28328108/ex-vivo-infection-of-human-placental-chorionic-villi-explants-with-trypanosoma-cruzi-and-toxoplasma-gondii-induces-different-toll-like-receptor-expression-and-cytokine-chemokine-profiles
#4
Christian Castillo, Lorena Muñoz, Ileana Carrillo, Ana Liempi, Christian Gallardo, Norbel Galanti, Juan Diego Maya, Ulrike Kemmerling
PROBLEM: Trypanosoma cruzi and Toxoplasma gondii present, respectively, low and high congenital transmission rates. The placenta as an immune regulatory organ expresses TLRs, leading to the secretion of cytokines. Both parasites are recognized by TLR-2, TLR-4, and TLR-9. Here, we studied if the parasites induce differences in TLR protein expression, cytokine profiles, and whether receptor inhibition is related to parasite infection. METHOD OF STUDY: Placental tissue explants were infected ex vivo with each parasite, TLRs protein expression, cytokine profile and parasite infection were determined by Western blotting, ELISA and qPCR...
March 22, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28328096/activation-of-nod-1-jnk-il-8-signal-axis-in-decidual-stromal-cells-facilitates-trophoblast-invasion
#5
Byung Jun Ryu, Jae Won Han, Ryang Hee Kim, Sohyun Yun, Tae Hyun Kim, Sung Eun Hur, Chul Jung Kim, Sung Ki Lee
Decidual stromal cells (DSCs) are known to regulate trophoblast invasion via unveiled mechanism yet. And nucleotide-binding oligomerization domain-containing protein 1 (NOD1) may influence on this DSC-trophoblast interaction. We investigated the mechanism underlying the DSC-mediated regulation of trophoblast invasion and the effect of NOD1 on their cross talk. Using human primary DSCs, BeWo cell invasion was measured. Cytokine secretion and MAP kinase signaling were examined in DSCs following treatment with NOD1 agonist, Tri-DAP...
March 22, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28328066/maternal-obesity-and-inflammatory-mediators-a-controversial-association
#6
REVIEW
Karen Priscilla Tezotto Pendeloski, Erika Ono, Maria Regina Torloni, Rosiane Mattar, Silvia Daher
The link between maternal obesity and inflammatory mediators is still unclear. Our aim was to summarize the main findings of recently published studies on this topic. We performed a search in Medline for studies published in the last years on obesity, human pregnancy, and inflammatory mediators. We report the findings of 30 studies. The characteristics and number of participants, study design, gestational age at sample collection, and type of sample varied widely. Approximately two-thirds of them investigated more than one mediator, and 50% included participants in only one trimester of pregnancy...
March 22, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28328045/micrornas-downregulated-following-immune-activation-of-rat%C3%A2-testis
#7
Mitchell I Parker, Michael A Palladino
PROBLEM: Little is known about how infection and the response to inflammation affect the microRNA (miRNA) profile of the male reproductive tract. We hypothesized that expression of inflammatory-related miRNAs would be altered following immune activation of rat testis. METHOD OF STUDY: Testis total RNA was purified from Sprague-Dawley rats 3 or 6 hours after receiving a 5 mg/kg intraperitoneal injection of bacterial lipopolysaccharide (LPS) and examined by qPCR using an 84-panel miRNA array...
March 22, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28326648/changes-in-expression-of-the-cd200-tolerance-signaling-molecule-and-its-receptor-cd200r-by-villus-trophoblasts-during-first-trimester-missed-abortion-and-in-chronic-histiocytic-intervillositis
#8
David A Clark, Jennifer M Dmetrichuk, Elizabeth McCready, Sukhbinder Dhesy-Thind, Jorge L Arredondo
PROBLEM: Expression of CD200 at the feto-maternal interface is associated with successful murine and human pregnancy. CD200 binding to CD200 receptors on lymphomyeloid cells suppresses inflammation and induces Tregs. CD200 receptors are also expressed on mouse and human placental trophoblast cells. What is the expression of CD200 and CD200R in human missed abortions which have preserved Treg levels and in chronic histiocytic intervillositis (CHI) where maternal inflammatory cells cause IUGR? METHODS: Immunohistiochemistry for CD200, CD200R, and Ki67 using human placental sections from missed abortions, term placenta, and CHI...
March 22, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28295835/type-i-interferons-modulate-methotrexate-resistance-in-gestational-trophoblastic-neoplasia
#9
Kevin M Elias, Richard A Harvey, Kathleen T Hasselblatt, Michael J Seckl, Ross S Berkowitz
PROBLEM: Resistance to methotrexate is a leading clinical problem in gestational trophoblastic neoplasia (GTN), but there are limited laboratory models for this condition. METHOD OF STUDY: We created isogenic trophoblastic cell lines resistant to methotrexate and compared these to the parent cell lines using gene expression microarrays and qRT-PCR followed by mechanistic studies using recombinant cytokines, pathway inhibitors, and patient sera. RESULTS: Gene expression microarrays and focused analysis by qRT-PCR revealed methotrexate led to type I interferon upregulation, in particular interferon alpha 2 (IFNA2), and methotrexate resistance was associated with chronic low level increases in type I interferon expression...
March 14, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28276165/distribution-of-invariant-natural-killer-t-cells-and-dendritic-cells-in-late-pre-term-birth-without-acute-chorioamnionitis
#10
Yasuyuki Negishi, Yoshio Shima, Toshiyuki Takeshita, Hidemi Takahashi
PROBLEM: Acute chorioamnionitis (aCAM) is an important cause of pre-term birth. However, little is known about the pathogenesis of late pre-term birth without aCAM that was the most common category of pre-term birth. Here we analyze the kinetics of immune cells obtained from the decidua of women with late pre-term births with and without aCAM. METHOD OF STUDY: Deciduas were obtained from women who underwent labor with late pre-term birth without aCAM (PB-n/aCAM) or with aCAM (PB-w/aCAM)...
March 9, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28276111/immune-cell-subsets-cytokine-and-cortisol-levels-during-the-first-week-of-life-in-neonates-born-to-pre-eclamptic-mothers
#11
Florentina Sava, Gergely Toldi, András Treszl, Júlia Hajdú, Ágnes Harmath, János Rigó, Tivadar Tulassay, Barna Vásárhelyi
PROBLEM: To address the hypothesis that pre-eclampsia (PE) impacts the fetal immune system, we investigated the prevalence of distinct immune cell subsets along with plasma cortisol and cytokine levels in pre-term newborns of PE mothers. METHOD OF STUDY: Cord blood and peripheral blood samples on the 1st, 3rd and 7th postnatal days of life were collected from 14 pre-term infants affected by PE and 14 non-PE pregnancies. We measured plasma cortisol and cytokine levels with immunoassays and assessed the prevalence of T, NK and DC subsets using flow cytometry...
March 9, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28276106/provocative-ideas-on-human-placental-biology-a-prerequisite-for-prevention-and-treatment-of-neonatal-health-challenges
#12
REVIEW
Shilpi Sehgal, Shinjini Bhatnagar, S K Pallavi
A 2-day invite-only meeting on generating "Provocative Ideas on human placental research" was organized on 1-2 December 2015 at the Translational Health Science and Technology Institute, Faridabad. This meeting was sponsored by Department of Biotechnology, Ministry of Science and Technology, Govt. of India. The objectives of this meeting were the critical evaluation of placental physiology and its development. Special emphasis was placed on understanding the consequences and implications of placental development in sustenance of pregnancy and in pregnancy-associated complications such as preeclampsia, intrauterine growth restriction, and preterm birth...
March 9, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28251714/the-transdifferentiation-of-regulatory-t-and-th17-cells-in-autoimmune-inflammatory-diseases-and-its-potential-implications-in-pregnancy-complications
#13
Zhao-Zhao Liu, Guo-Qiang Sun, Xiao-Hui Hu, Joanne Kwak-Kim, Ai-Hua Liao
In the past decades, studies have shown that a balance between regulatory T cells (Tregs) and T helper 17 (Th17) cells plays a major role in autoimmune/inflammatory diseases as well as pregnancy complications. Decreased number and function of Tregs, and increased number of Th17 cells which often have an opposed effect of Tregs, are associated with these conditions. Recently, the plasticity of Tregs and Th17 cells has been reported to be involved in the pathogenesis of autoimmune/inflammatory diseases. Hence, we summarize the current knowledge of Tregs and Th17 cells plasticity with an emphasis on their reciprocal transdifferentiation in autoimmune/inflammatory diseases...
March 2, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28251711/trophoblasts-regulate-natural-killer-cells-via-control-of-interleukin-15-receptor-signaling
#14
Seo Y Park, Sohyun Yun, Byung J Ryu, Ae R Han, Sung K Lee
PROBLEM: Trophoblasts are known to decrease natural killer (NK) cell cytotoxicity. However, little is known about the interaction between trophoblasts and NK cells during pregnancy. Interleukin-15 (IL-15) is essential for priming NK cells and maximizing their effector functions. We investigated whether trophoblasts regulate NK cell activation via IL-15/IL-2 receptor and its signaling pathways. METHOD OF STUDY: Natural killer-92 cells were primed with human first-trimester trophoblast cells (Sw...
March 2, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28240436/the-ccl17-ccr4-axis-between-endometrial-stromal-cells-and-macrophages-contributes-to-the-high-levels-of-il-6-in-ectopic-milieu
#15
Wen-Jie Zhou, Xin-Xin Hou, Xiao-Qiu Wang, Da-Jin Li
Endometriosis is a chronic inflammatory disease characterized by the elevation of proinflammatory cytokines, such as IL-6, in the peritoneal fluid. However, the precise mechanism of the highly elevated IL-6 levels in ectopic milieu remains unclear. The aim of this study was to investigate whether the cross talk between endometrial stromal cells (ESCs) and macrophages contributes to the elevated IL-6 production. Samples of endometrium and ectopic tissues were obtained from patients with or without endometriosis...
February 27, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28240400/low-dose-prednisone-and-immunoglobulin-g-treatment-for-woman-at-risk-for-neonatal-alloimmune-thrombocytopenia-and-t-helper-1-immunity
#16
Annie Skariah, Nayoung Sung, Maria D Salazar Garcia, Li Wu, Anjali Tikoo, Alice Gilman-Sachs, Joanne Kwak-Kim
PROBLEM: Fetal and neonatal alloimmune thrombocytopenia is an alloimmune disorder resulting from platelet opsonization by maternal antibodies that destroy fetal platelets. As there is no antenatal screening or immunization to prevent sensitization, selection of high-risk population or the prevention of antenatal sensitization is significantly limited. METHOD OF STUDY: (i) A case report of ante- and postnatal management of a woman with paternal homozygosity for human platelet antigen-1(HPA) incompatibility...
February 27, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28240397/oxidative-stress-placental-ageing-related-pathologies-and-adverse-pregnancy-outcomes
#17
REVIEW
Zakia Sultana, Kaushik Maiti, John Aitken, Jonathan Morris, Lee Dedman, Roger Smith
Oxidative stress (OS), an imbalance between free radical generation and antioxidant defence, is recognized as a key factor in the pathogenesis of adverse pregnancy outcomes. Although OS is a common future of normal pregnancy, persistent, overwhelming OS leads to consumption and decline of antioxidants, affecting placental antioxidant capacity and reducing systems. The accumulation of OS causes damage to lipids, proteins and DNA in the placental tissue that induces a form of accelerated ageing. Premature ageing of the placenta is associated with placental insufficiency that prevents the organ meeting the needs of the foetus, and as a consequence, the viability of the foetus is compromised...
February 27, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28233423/inflammasome-assembly-in-the-chorioamniotic-membranes-during-spontaneous-labor-at-term
#18
Nardhy Gomez-Lopez, Roberto Romero, Yi Xu, Valeria Garcia-Flores, Yaozhu Leng, Bogdan Panaitescu, Derek Miller, Vikki M Abrahams, Sonia S Hassan
PROBLEM: Inflammasome activation requires two steps: priming and assembly of the multimeric complex. The second step includes assembly of the sensor molecule and adaptor protein ASC (an apoptosis-associated speck-like protein containing a CARD), which results in ASC speck formation and the recruitment of caspase (CASP)-1. Herein, we investigated whether there is inflammasome assembly in the chorioamniotic membranes and choriodecidual leukocytes from women who underwent spontaneous labor at term...
February 24, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28224680/aberrant-expressions-of-endometrial-id3-and-ctla-4-are-associated-with-unexplained-repeated-implantation-failure-and-recurrent-miscarriage
#19
Jin-Li Ding, Liang-Hui Diao, Tai-Lang Yin, Chun-Yu Huang, Biao Yin, Cong Chen, Yi Zhang, Jie Li, Yan-Xiang Cheng, Yong Zeng, Jing Yang
Inhibitor of DNA-binding protein 3 (Id3) is required for tumor angiogenesis and regulatory T-cell generation. However, the involvement of Id3 in unexplained repeated implantation failure (RIF) and recurrent miscarriage (RM) remains poorly understood. Immunohistochemistry was used to identify Id3, CD34, CTLA-4, and FOXP3 in the endometrium taken from the women with RIF (n=16), RM (n=16) and matched controls (n=8). The images were acquired and analyzed by the Vectra(®) automated quantitative pathology imaging system...
February 21, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28224678/microbiome-autoimmunity-allergy-and-helminth-infection-the-importance-of-the-pregnancy-period
#20
Xian Chen, Su Liu, Qiao Tan, Yehuda Shoenfeld, Yong Zeng
Pregnancy is a special physical period in reproductive age women, which has a beneficial influence on the course of certain autoimmune diseases. It has been recently suggested that the microbiome undergoes profound changes during pregnancy that are associated with host physiological and immunological adaptations. The maternal microbiome remodeling during pregnancy is an active response of the mother, possibly to alter immune system status and to facilitate metabolic and immunological adaptations, which are needed for a successful pregnancy...
February 21, 2017: American Journal of Reproductive Immunology: AJRI
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